LTC3853 - Linear Technology

LTC3853 Multiphase Synchronous Step-Down Controller

n Triple, 120° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n Configurable as a 180° Dual Phase Controller Plus a Single Phase Controller n The Third Phase Can Regulate Up to a 13.5V Output n High Efficiency: Up to 92% n RSENSE or DCR Current Sensing n ±0.75% 0.8V Output Voltage Accuracy n Phase-Lockable Fixed Frequenc.

Features

DESCRIPTION n Triple, 120° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n Configurable as a 180° Dual Phase Controller Plus a Single Phase Controller n The Third Phase Can Regulate Up to a 13.5V Output n High Efficiency: Up to 92% n RSENSE or DCR Current Sensing n ±0.75% 0.8V Output Voltage Accuracy n Phase-Lockable Fixed Frequency 250kHz to 750kHz n Supports Pre-Biased Outputs n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 4.5V to 24V Operation (28V Abs Max) n Adjustable Soft-Start Current Ramping or Tracking n Foldback Output Current Limi.